Rotation‐Driven Phase Modulation in a Mechanical Gear‐Matrix Metasurface for Beam Splitting, Wide‐Angle Scanning, Polarization Conversion (Advanced Optical Materials 16/2026)

Mechanical Gear-Matrix Metasurface A mechanically reconfigurable metasurface is presented. A gear-matrix network sequentially rotates the unit cells with minimal power consumption, enabling controlled transmission-phase modulation for linear-to-circular polarization conversion, beam splitting, and wide-angle beam scanning, making it suitable for adaptive space applications. Reconfigurable rotation angles of the unit cells produce dynamically steerable RHCP and LHCP beams up to ±70°. More details can be found in the Research Article by , Sungjoon Lim and co-workers (DOI: 10.1002/adom.202503218).